Perhaps you should try some spelling variations:
lam duoc » nam duoc, luat duoc, lam thuoc
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
lao luc » bao luc
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
le cua » ly cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. hieu ve ((lao luc) or (lam duoc)) va hanh ((le cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ve ((lao luc) OR (lam duoc)) va hanh ((le cua) OR (dai cua)) te.
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu ve ((lao luc) or (lam duoc)) va hanh ((le cua) or (dai cua)) te*.