Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
cong hanh » cong thanh, cong khanh, hong hanh
hang cong » dang cong, hang nong, bang cong
cong tan » cong tac, cong san, cong thanh
tan binh » tran binh, tang binh, van binh
hanh va » hang va, hanh vi
va hang » van hang, va nang, va lang
binh co » binh cao, benh co, kinh co

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chieu sang)) - cong hanh va hang cong tan binh co~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sang)) - cong hanh va hang cong tan binh co.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chieu sang)) - cong hanh va hang cong tan binh co*.