Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
doanh luan » doanh nhan
trinh cong » trinh dung
doc chieu » doc hieu, doi chieu, toc thieu
tang luan » dung luan
cong manh » cong danh, duong manh, cong thanh
manh van » anh van, menh van, canh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu tinh - thanh ((tang luan) or (doanh luan)) trinh cong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu tinh - thanh ((tang luan) OR (doanh luan)) trinh cong manh van ban.
• Adding a wildcard symbol may retrieve word variants: doc chieu tinh - thanh ((tang luan) or (doanh luan)) trinh cong manh van ban*.