Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
luat bat » luat dat, luat bao, luat dan
dang mam » dang nam, dang mau, dang mat
su sach » so sach, vu sach
ve chat » va chat, van chat
luc ban » duc ban, cuc ban, luc bat
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 (luat 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 (luat 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 (luat bat)) thanh vi cua vat*.