Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
phong cong » phong chong, thong cong, chong cong
van phong » van dong, hai phong
dan khoan » dan khoa, dai khoang, toan khoan
doc hieu » hoc thieu, hoc hien
tran van » luan van
cong dan » cong san, cong tan, huong dan
khoan va » doan va, khoa ma, nhan va

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) or (toc thieu)) manh - thanh tran van phong cong dan khoan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) manh - thanh tran van phong cong dan khoan va*.