Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong cong » phuong dong, phong cong, phung cong
cuc phuong » cac phuong, cuu phuong, cua phuong
trung cuc » trung cua, trung luc, truong cuoc
ban thanh » ban hanh, ban hang
tieu van » hieu van, sieu van, lieu van
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu van - thanh trung cuc phuong cong ((dan than) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu van - thanh trung cuc phuong cong ((dan than) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu van - thanh trung cuc phuong cong ((dan than) or (ban thanh)) cau*.