Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhieu tang » chieu sang, hieu lang, nhiet nang
tong cong » trong cong, cong cong, dung cong
chinh ve » chinh va, chinh vi, chinh ke
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan tap » toan ban
ve tong » ve tuong, ve trong, ve cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chiet tach) or (nhieu tang)) - hanh chinh ve tong cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (nhieu tang)) - hanh chinh ve tong cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (nhieu tang)) - hanh chinh ve tong cong san toan tap*.