Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
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
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
va nam » van nam, ha nam, va nay
di cua » doi cua, de cua, do cua

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 va nam thuc va hanh ((di cua) OR (dai cua)) tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu va nam thuc va hanh ((di cua) OR (dai cua)) tu".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu va nam thuc va hanh ((di cua) OR (dai cua)) tu*.