Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
dang mam » dang nam, dang mau, dang mat
su sach » so sach, vu sach
ve chat » va chat, van chat
luc bat » suc bat, luc nhat, luat bat
luc ban » duc ban, cuc ban, luc van
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
dang ma » dang mau, dang mat, tang ma
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((dang ma) OR (dang mam)) hoi. hieu ve chat ((luc ban) or (luc bat)) thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang ma) OR (dang mam)) hoi. hieu ve chat ((luc ban) OR (luc bat)) thanh vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang ma) OR (dang mam)) hoi. hieu ve chat ((luc ban) or (luc bat)) thanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang ma) OR (dang mam)) hoi. hieu ve chat ((luc ban) or (luc bat)) thanh vi cua vat*.