Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
lam thuc » lam thuoc, am thuc, nam thuc
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van lam » van nam
tai cuu » tai cuc, tai buu, tai 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: te sach ty nang xa hoi. hieu van lam thuc ((va thanh) OR (ban thanh)) tai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu van lam thuc ((va thanh) OR (ban thanh)) tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu van lam thuc ((va thanh) OR (ban thanh)) tai cuu tre*.