Perhaps you should try some spelling variations:
phong cong » phong chong, thong cong, chong cong
kieu tinh » lieu tinh, trieu tinh, diep tinh
thanh dan » thanh san, thanh van, thanh dat
cuc phong » cuc phuong, cac phong, duc phong
hanh dan » hanh san, canh dan, hanh dao
cong tan » cong tac, cong san, cong thanh
so kieu » so dieu, so lieu, ho kieu
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: so kieu tinh - ((hanh dan) or (thanh dan)) cuc phong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so kieu tinh - ((hanh dan) OR (thanh dan)) cuc phong cong tan van ban*.