Perhaps you should try some spelling variations:
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
cac xuc » cam xuc, cac nuoc, chat xuc
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
sach tu » sach thu, cach tu, sach uu
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) OR (sach tu)) tang ma hoi. hieu ve cac xuc ((van hanh) or (ban hanh)) dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach tu)) tang ma hoi. hieu ve cac xuc ((van hanh) OR (ban hanh)) dai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ty) OR (sach tu)) tang ma hoi. hieu ve cac xuc ((van hanh) or (ban hanh)) dai cua tu".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) OR (sach tu)) tang ma hoi. hieu ve cac xuc ((van hanh) or (ban hanh)) dai cua tu*.