Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
vu khach » vu khanh, vu khac, vay khach
thu sach » tu sach, thuat sach, thuoc sach
bao thuc » cao thuoc, am thuc, va thuc
cay thuc » cay thuoc, can thuc, day thuc
thanh vi » hanh vi, thanh va, thanh ve
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 nang xa hoi. lieu va ((bao thuc) or (cay thuc)) ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (thu sach)) ky nang xa hoi. lieu va ((bao thuc) OR (cay thuc)) ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (thu sach)) ky nang xa hoi. lieu va ((bao thuc) or (cay thuc)) ban thanh vi cua tre*.