Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
trung chua » trung cua, trong chuan, trung ha
hoc thieu » toc thieu, hoc hien
chua nang » chuc nang, chua xang, kha nang
cong sang » cong lang, cong vang, cong bang
doc hieu » toc thieu, hoc hien
cong san » cong tac
tuan ban » tuan bang, toan ban, luan ban

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