Perhaps you should try some spelling variations:
kieu tinh » lieu tinh, trieu tinh, diep tinh
lang luan » tang luan, hang luan, bang luan
hoan cong » hoang cong, hoa cong, toan cong
thi kieu » thi kiem, thi dieu, thi kim
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran ban » tranh ban, tran van, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: thi kieu tinh - nhanh ((lang luan) or (dung luan)) hoan cong tac tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thi kieu tinh - nhanh ((lang luan) OR (dung luan)) hoan cong tac tran ban*.