Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nhan tai » hang tai, van tai, toan tai
phan tai » pham tai, phan thi, han tai
sach ly » sach y, sach lo, sach ty
cua tre » cua te, cuu tre, cua triet
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
ly hang » ly quang
cu tren » tu tren, dua tren
luc va » duc va, tuc va, loc va
ve cau » ke cau, va cau, ve cac
hang x » nang x, hoang xa, chang xu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ly hang x hoi. hieu ve cau luc va ((phan tai) or (nhan tai)) ((cua tre) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly hang x hoi. hieu ve cau luc va ((phan tai) OR (nhan tai)) ((cua tre) OR (cu tren))*.