Perhaps you should try some spelling variations:
luan hung » luan chung, lan hung, luan ung
tang luan » dung luan
chu manh » ho manh, chu han, thu minh
anh tang » anh bang, anh dang, anh nang
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan cao » toan ban, toan tap
chu van » cuu van, chu han

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu manh) OR (chu van)) - anh tang luan hung ((cong dan) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu manh) OR (chu van)) - anh tang luan hung ((cong dan) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu manh) OR (chu van)) - anh tang luan hung ((cong dan) or (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) OR (chu van)) - anh tang luan hung ((cong dan) or (cong tac)) toan cao*.