Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
hoc sach » hoc cac, hoc anh
nam truc » nam truoc, nam thuc, nam trung
bo sach » co sach
nang xa » nang x, lang xa, nang ma
qua nam » quan nam, cua nam, quang nam
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh vu » hanh vi, hanh va, hanh tu
y nang » ky nang, ly nang, v nang
vu van » tu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((bo sach) or (((hoc sach) OR (hoc sinh)))) y nang xa hoi. hieu qua nam truc va hanh vu van triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((bo sach) OR (((hoc sach) OR (hoc sinh)))) y nang xa hoi. hieu qua nam truc va hanh vu van triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bo sach) or (((hoc sach) OR (hoc sinh)))) y nang xa hoi. hieu qua nam truc va hanh vu van triet*".