Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, mot chieu
hang hang » cang thang, hung thang, lang thang
nang hang » nang sang, cang thang, lang thang
dong hang » dong bang, dong hung, dong nang
toan tap » toan ban
xa dong » ha dong, van dong, lao dong
va toan » van toan, bai toan, tap toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - ((hang hang) or (nang hang)) xa dong hang va toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - ((hang hang) OR (nang hang)) xa dong hang va toan tap*.