Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
anh quang » anh xquang, anh quan, nhanh quang
van nhung » van nhuong, va nhung, van hung
anh bang » anh hoang, tinh bang, anh dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
theo bo » thao bo, theo doi, theo don
bo sach » co sach, hoc sach

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

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