Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
theo chu » theo chieu, cho chu, chao chu
anh tang » anh bang, anh dang, anh nang
anh dung » anh dong, anh huong, sach dung
dan toan » van toan, dan than, manh toan
toan tap » toan ban
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 van - ((anh tang) or (anh dung)) cua ((nhung cong) OR (hang cong)) dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu van - ((anh tang) OR (anh dung)) cua ((nhung cong) OR (hang cong)) dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu van - ((anh tang) or (anh dung)) cua ((nhung cong) OR (hang cong)) dan toan tap".
• Adding a wildcard symbol may retrieve word variants: theo chu van - ((anh tang) or (anh dung)) cua ((nhung cong) OR (hang cong)) dan toan tap*.