Perhaps you should try some spelling variations:
ban tinh » ban thanh, quan tinh, ban hanh
su sach » so sach, vu sach
cuu tre » cau tren, cau treo
tinh vi » trinh vi, tinh voi, tinh va
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
cua tre » cua te, cua triet, dua tren
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
ve cam » ve cham, ve cac, va cam

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) or (te sach)) ky tang xa hoi. hieu ve cam cuc ban tinh vi ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky tang xa hoi. hieu ve cam cuc ban tinh vi ((cuu tre) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky tang xa hoi. hieu ve cam cuc ban tinh vi ((cuu tre) OR (cua tre))*".