Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thanh
hanh de » hanh ve, hanh kem
y nang » ky nang, ly nang, v nang
goc va » hoc va, doc va, uoc va
loc va » hoc va, luc va
de va » de van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang xa hoi. lieu va tham ((goc va) or (loc va)) hanh de va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. lieu va tham ((goc va) OR (loc va)) hanh de va triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. lieu va tham ((goc va) or (loc va)) hanh de va triet*.