Perhaps you should try some spelling variations:
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
sach ky » sac ky, sach y, sach ty
cac luc » coc luc, cac nuoc, cac cuoc
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang xa) or (lang xa)) hoi. hieu ve ((cac luc) OR (cau luc)) va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (lang xa)) hoi. hieu ve ((cac luc) OR (cau luc)) va hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (lang xa)) hoi. hieu ve ((cac luc) OR (cau luc)) va hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (lang xa)) hoi. hieu ve ((cac luc) OR (cau luc)) va hanh di cua tre*.