Perhaps you should try some spelling variations:
nhung lang » nhung van, nhanh lang, nhung cong
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
chi sach » chinh sach, chieu sach, co sach
cong tac » cong ty
sat phan » sat nhan, vat phan, xuat phan
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sach - thanh cong tac ((((nhung lang) or (hang cong))) or (dung cong)) sat phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh cong tac ((((nhung lang) OR (hang cong))) OR (dung cong)) sat phan tu.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - thanh cong tac ((((nhung lang) or (hang cong))) or (dung cong)) sat phan tu*.