unable to find twitter posts with mixed keyword language

/twitter/keyword/

- The involved route, with all required and optional parameters
/twitter/keyword/cat猫 min_faves:100
or
/twitter/keyword/dog犬 min_faves:100
- What is expected
Find twitter posts with mixed language (english and kanji) that match the keyword criteria.

- What is actually happening
unable to find twitter posts with said criteria if the twitter post doesn't contain english.

- Self-deployment information

| Env | Value |
| ------------------ | ------------- |
| OS | Ubuntu 20.04|
| Node version | |
| if Docker, version | Docker version 20.10.8, build 3967b7d |

- Additional info (logs errors etc)