Perhaps you should try some spelling variations:
hieu tinh » chieu tinh, lieu tinh, kieu tinh
manh hung » anh huong
chua nang » chua xang, kha nang, cuu nang
doc hieu » toc thieu, hoc thieu, hoc hien
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban
chuc » thuc, chu, phuc

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 tinh - manh hung ((chua nang) or (chuc nang)) cong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - manh hung ((chua nang) OR (chuc nang)) cong van tuan ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - manh hung ((chua nang) or (chuc nang)) cong van tuan ban*.