Perhaps you should try some spelling variations:
thanh trung » thanh tung
chon chinh » cho chinh, thon chinh, chinh chinh
hanh trang » canh tranh, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
cong sang » cong san, cong lang, cong vang
nhuan ban » nhat ban, thuat ban, nhuan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: chon chinh sach - ((hanh trang) OR (thanh trung)) va nhung cong sang ((nhuan ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chon chinh sach - ((hanh trang) OR (thanh trung)) va nhung cong sang ((nhuan ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "chon chinh sach - ((hanh trang) OR (thanh trung)) va nhung cong sang ((nhuan ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: chon chinh sach - ((hanh trang) OR (thanh trung)) va nhung cong sang ((nhuan ban) or (toan ban))*.