Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
van lam » van nam
qua ban » qua quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky tang ma hoa. hieu van lam ((dia ban) or (((qua ban) or (cua ban)))) thanh lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang ma hoa. hieu van lam ((dia ban) OR (((qua ban) OR (cua ban)))) thanh lai su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang ma hoa. hieu van lam ((dia ban) or (((qua ban) or (cua ban)))) thanh lai su triet*.