Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
cua trong » cua truong, cua trung, qua trong
theo chu » theo chieu, cho chu, chao chu
chu manh » ho manh, chu han, chu van
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong ty
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu manh - anh tang cua trong ((cong tan) or (cong thanh)) ((van ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu manh - anh tang cua trong ((cong tan) OR (cong thanh)) ((van ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo chu manh - anh tang cua trong ((cong tan) or (cong thanh)) ((van ban) or (toan cao))*.