Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
cau phuc » cau truc, chau phu, huu phuc
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
ty nang » ky nang, ty hang, ly nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty xang)) xa hoi. ((hieu ve) OR (hieu va)) cau phuc va hanh tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ty xang)) xa hoi. ((hieu ve) or (hieu va)) cau phuc va hanh tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ty xang)) xa hoi. ((hieu ve) or (hieu va)) cau phuc va hanh tai cua tre*.