Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
trung tran » trung tuan, trung thanh, trung tam
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
tran dung » tran dang, tran hung, tran quang
cong tan » cong tac, cong san, cong ty
ban cau » bang cau, ban can, ban dau
van cau » van dau, van hau, van chat

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 tran dung ((cong tan) OR (cong thanh)) ((ban cau) or (van cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung tran dung ((cong tan) OR (cong thanh)) ((ban cau) OR (van cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh trung tran dung ((cong tan) OR (cong thanh)) ((ban cau) or (van cau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung tran dung ((cong tan) OR (cong thanh)) ((ban cau) or (van cau))*.