Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
vai cua » dai cua, hai cua, lai cua
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
dang ma » dang mau, dang mam, dang mat
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
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 ky) OR (sac ky)) dang ma hoi. hieu ve cam xuc ((va thanh) or (ban thanh)) vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ky) OR (sac ky)) dang ma hoi. hieu ve cam xuc ((va thanh) OR (ban thanh)) vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ky) OR (sac ky)) dang ma hoi. hieu ve cam xuc ((va thanh) or (ban thanh)) vai cua tu".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ky) OR (sac ky)) dang ma hoi. hieu ve cam xuc ((va thanh) or (ban thanh)) vai cua tu*.