Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cam truc » cau truc, nam truc, lam truoc
sach van » sach han, bach van, cach van
thanh vi » hanh vi, thanh va, thanh ve
truc van » truc va, thuc van, truc ban
cua tre » cua te, cua triet, dua tren
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach va » sach xa, sach ha, sach dao
cuu tre » cau tren, cau treo
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach van) or (sach va)) nang xa hoi. hieu ve cam truc van thanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach van) OR (sach va)) nang xa hoi. hieu ve cam truc van thanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach van) or (sach va)) nang xa hoi. hieu ve cam truc van thanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su ((sach van) or (sach va)) nang xa hoi. hieu ve cam truc van thanh vi ((cua tre) OR (cuu tre))*.