Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cap nuoc » dat nuoc
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
te sach » toc sach
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
tri su » tri du, tai su, trinh su
ve cap » ve cac, le cap, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((tang ma) or (nang cao)) hoa. hieu ve cap nuoc ((van hanh) OR (ban hanh)) tri su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang ma) OR (nang cao)) hoa. hieu ve cap nuoc ((van hanh) OR (ban hanh)) tri su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((tang ma) or (nang cao)) hoa. hieu ve cap nuoc ((van hanh) OR (ban hanh)) tri su triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang ma) or (nang cao)) hoa. hieu ve cap nuoc ((van hanh) OR (ban hanh)) tri su triet*.