Perhaps you should try some spelling variations:
truong chan » truong phan, truong nhan, truong chung
thieu xanh » chieu xanh, hieu manh, thien anh
trong chan » trong chuan, trong cham, trong can
dung cong » dung trong
san thanh » ban thanh, van thanh, son thanh
thanh cap » thanh lap, hanh cap, than cap
tien anh » tieng anh, tien manh, dien anh
cong san » cong tac

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) or (tien anh)) - thanh ((truong chan) OR (trong chan)) dung cong san thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (tien anh)) - thanh ((truong chan) OR (trong chan)) dung cong san thanh cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (tien anh)) - thanh ((truong chan) OR (trong chan)) dung cong san thanh cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (tien anh)) - thanh ((truong chan) OR (trong chan)) dung cong san thanh cap*.