Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong cao, truong dao
hang dong » hang nong, hang cong, hanh dong
trung ha » trung hoc, trung tam, trung cap
dong tac » cong tac, dong tai, dong bac
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - thanh ((trung ha) or (truong va)) hang dong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung ha) OR (truong va)) hang dong tac than cap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung ha) or (truong va)) hang dong tac than cap*.