Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
van chay » san chay, toan chay, van phan
van chat » cao chat
tu sach » thu sach, su sach, te sach
ty nang » ty xang, ty hang, ly nang
dua ban » dia ban, cua ban, qua ban
vai cua » dai cua, hai cua, lai cua
cua te » cua tu

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 ((ty nang) or (ky nang)) ma hoa. hieu ((van chay) OR (van chat)) dua ban thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ky nang)) ma hoa. hieu ((van chay) OR (van chat)) dua ban thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) or (ky nang)) ma hoa. hieu ((van chay) OR (van chat)) dua ban thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ky nang)) ma hoa. hieu ((van chay) OR (van chat)) dua ban thanh vai cua te*.