Perhaps you should try some spelling variations:
dung cong » dung trong
ganh nang » anh nang, nganh nong, van nang
theo chu » theo chieu, cho chu, chao chu
cong dan » cong san, cong tan, huong dan
chu han » chu van
nang ma » tang ma, sang ma, nang cao
ma dung » mai dung, m dung, va dung

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 han - ganh nang ma dung cong dan ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu han - ganh nang ma dung cong dan ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: theo chu han - ganh nang ma dung cong dan ((toan ban) or (van ban))*.