Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh tai » thanh hai, thanh toan, doanh tai
nang cho » nang chon, ngang cho, sang cho
tu sach » thu sach, su sach, tu cach
te sach » toc sach
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
cuc tre » duc tre, cua tre, cuu tre
va cam » va cham, va cac, va cao

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 ((nang cho) OR (nang cao)) hoc. lieu va cam duc ban thanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky ((nang cho) OR (nang cao)) hoc. lieu va cam duc ban thanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky ((nang cho) OR (nang cao)) hoc. lieu va cam duc ban thanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky ((nang cho) OR (nang cao)) hoc. lieu va cam duc ban thanh tai cuc tre*.