Perhaps you should try some spelling variations:
cam thuoc » cay thuoc, nam thuoc, lam thuoc
thanh vai » thanh hai, thanh van, thanh tai
tan thanh » tran thanh, tang thanh, toan thanh
thuoc tan » thuoc tai, thuoc ban, thuoc tren
vu khach » vu khanh, vu khac, vay khach
thu sach » tu sach, thuat sach, thuoc sach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
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: ((vu khach) or (thu sach)) ky tang xa hoi. lieu va cam thuoc tan thanh vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (thu sach)) ky tang xa hoi. lieu va cam thuoc tan thanh vai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) or (thu sach)) ky tang xa hoi. lieu va cam thuoc tan thanh vai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (thu sach)) ky tang xa hoi. lieu va cam thuoc tan thanh vai ((cua tre) OR (cuu tre))*.