Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
qua ban » cua ban, qua quan
cua qua » cua quan, cua rua, cuu qua
van cua » vang cua, ban cua, dan cua
cuu tre » cua tre, cau tren, cau treo
tao hoa » bao hoa, tao hoi, tao hop
ky dang » ky nang, ky danh
ky sang » ky nang, ky tang, duy sang
tao ho » tao hoi, tao cho, tao hop

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 ((ky sang) or (ky dang)) ((tao hoa) OR (tao ho)). hieu van cua qua ban thanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky sang) OR (ky dang)) ((tao hoa) OR (tao ho)). hieu van cua qua ban thanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) or (ky dang)) ((tao hoa) OR (tao ho)). hieu van cua qua ban thanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) or (ky dang)) ((tao hoa) OR (tao ho)). hieu van cua qua ban thanh vai cuu tre*.