Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
nang xa » lang xa, nang ma, mang xa
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va
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) OR (nang x)) hoi. hieu ((van lam) or (van nam)) xuc va thanh ve cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (nang x)) hoi. hieu ((van lam) OR (van nam)) xuc va thanh ve cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((nang xa) OR (nang x)) hoi. hieu ((van lam) or (van nam)) xuc va thanh ve cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang xa) OR (nang x)) hoi. hieu ((van lam) or (van nam)) xuc va thanh ve cuu tre*.