Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
vu khach » vu khanh, vu khac, vay khach
thuc ban » thuoc ban, thuc dan, thu ban
cac thuc » cach thuc, cac thu, can thuc
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (tu sach)) ky lang xa hoi. lieu va cac thuc ban thanh vai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) or (tu sach)) ky lang xa hoi. lieu va cac thuc ban thanh vai ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (tu sach)) ky lang xa hoi. lieu va cac thuc ban thanh vai ((cua tre) OR (cuu tre))*.