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
truong va » truong dai, truong cao, truong dao
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap

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 tam) or (truong va)) thong cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung tam) OR (truong va)) thong cong san than cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung tam) or (truong va)) thong cong san than cao*.