Perhaps you should try some spelling variations:
quan tinh » quan binh, quang ninh, quang binh
hieu van » hieu va, thien van, lieu va
ban tinh » ban thanh, ban hanh, bi tinh
tu sach » thu sach, su sach, tu cach
cam cuc » cam xuc, cham cuu, pham cuc
van cam » van nam, van lam, van cau
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
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: ((tu sach) or (te sach)) ky tang xa hoi. hieu van cam cuc ((ban tinh) OR (quan tinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky tang xa hoi. hieu van cam cuc ((ban tinh) OR (quan tinh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky tang xa hoi. hieu van cam cuc ((ban tinh) OR (quan tinh)) vi cua tre*".