Perhaps you should try some spelling variations:
nhan luc » nang luc
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, hieu ve
cau luc » cau truc, cau phuc
hanh le » thanh le, hanh ve, hanh de
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
le cua » ly 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 v nang xa hoi. ((hieu van) OR (lieu va)) ((nhan luc) or (cau luc)) van hanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. ((hieu van) OR (lieu va)) ((nhan luc) OR (cau luc)) van hanh le cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. ((hieu van) OR (lieu va)) ((nhan luc) or (cau luc)) van hanh le cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. ((hieu van) OR (lieu va)) ((nhan luc) or (cau luc)) van hanh le cua tre*.