Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
thanh ve » thanh va, thanh vien, thanh van
hanh ve » hanh vi, hanh va, hanh kem
cuu tre » cua tre, cau tren, cau treo
van lam » van nam
nang xa » nang x, lang xa, nang ma
xuc va » duc va, luc va, xac va
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa

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. hieu van lam ((xuc va) OR (tuc va)) ((thanh ve) or (hanh ve)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. hieu van lam ((xuc va) OR (tuc va)) ((thanh ve) OR (hanh ve)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. hieu van lam ((xuc va) OR (tuc va)) ((thanh ve) or (hanh ve)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu van lam ((xuc va) OR (tuc va)) ((thanh ve) or (hanh ve)) cuu tre*.