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

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) or (van nam)) ((xuc va) OR (tuc va)) thanh 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) OR (van nam)) ((xuc va) OR (tuc va)) thanh 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) or (van nam)) ((xuc va) OR (tuc va)) thanh ve cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu ((van lam) or (van nam)) ((xuc va) OR (tuc va)) thanh ve cuu tre*.