Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thai cua » than cua, tai cuc, tri cua
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
qua ban » cua ban, qua quan
tai cua » tai cuc, tri cua, dai cua
van cam » van nam, van lam, van cau
cam qua » cau qua, cac qua, cay qua
nang xa » nang x, lang xa, nang ma
te sach » toc sach

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) or (te sach)) ky nang xa hoi. hieu van cam qua ban thanh ((tai cua) OR (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang xa hoi. hieu van cam qua ban thanh ((tai cua) OR (thai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. hieu van cam qua ban thanh ((tai cua) OR (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. hieu van cam qua ban thanh ((tai cua) OR (thai cua)) tre*.