Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban hang » ngan hang
chat huu » pham huu
hang vi » hang va, hanh vi, hang di
huu ban » huu bang, huu han, cuu ban
cua tre » cua te, cuu tre, cua triet
hieu va » hieu qua
ly nang » ly hang, ly vang, ly quang
ma hoi » mai hoi, xa hoi, ma hoa
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: thu sach ((ly nang) OR (ky nang)) ma hoi. ((hieu va) or (lieu va)) chat huu ban hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ly nang) OR (ky nang)) ma hoi. ((hieu va) OR (lieu va)) chat huu ban hang vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ly nang) OR (ky nang)) ma hoi. ((hieu va) or (lieu va)) chat huu ban hang vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ly nang) OR (ky nang)) ma hoi. ((hieu va) or (lieu va)) chat huu ban hang vi cua tre*.