Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh dai » hanh tai, hanh dao, vanh dai
va hanh » van hanh, va thanh, va danh
cau luc » cau phuc
sach ly » sach y, sach lo, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet

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 ((nang xa) OR (lang xa)) hoi. hieu ve ((cau luc) or (cau truc)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly ((nang xa) OR (lang xa)) hoi. hieu ve ((cau luc) OR (cau truc)) va hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ly ((nang xa) OR (lang xa)) hoi. hieu ve ((cau luc) or (cau truc)) va hanh dai cua tre*".