Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
vu khach » vu khanh, vu khac, vay khach
thu sach » thuat sach, thuoc sach, thu hoach
cac thuc » cach thuc, cac thu, can thuc
thuc ban » thuoc ban, thuc dan, thu ban
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khach) or (((thu sach) OR (tu sach)))) ky nang xa hoi. lieu va cac thuc ban thanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (((thu sach) OR (tu sach)))) ky nang xa hoi. lieu va cac thuc ban thanh vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) or (((thu sach) OR (tu sach)))) ky nang xa hoi. lieu va cac thuc ban thanh vai cuu tre*".