Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
thanh trung » thanh tung
thanh chau » thanh cha, thanh cham, thanh chu
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cua » truong cua, trung tuan, trung cap
cua duong » cua dong, cua huong, qua duong
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
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: doc hieu xanh - thanh trung cua duong ((cong tan) or (truong thanh)) ((thanh chau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh trung cua duong ((cong tan) OR (truong thanh)) ((thanh chau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung cua duong ((cong tan) or (truong thanh)) ((thanh chau) or (than cap))*.