Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trung cap » truong cao
cong san » cong tac
san than » sang than, san thanh, ban than
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 cap) or (trung tam)) thong cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cap) OR (trung tam)) thong cong san than cap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cap) or (trung tam)) thong cong san than cap*.