Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, nhung don
doi chinh » do chinh, tai chinh, hoc chinh
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh vat, trinh ve
san can » san van, ban can, san chang
can ban » van ban, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chinh sach - hanh trinh va ((nhung cong) OR (hang cong)) san can ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chinh sach - hanh trinh va ((nhung cong) OR (hang cong)) san can ban".
• Adding a wildcard symbol may retrieve word variants: doi chinh sach - hanh trinh va ((nhung cong) OR (hang cong)) san can ban*.