Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dung tren » dung trong, dung trung
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
hanh de » hanh ve, hanh kem
te sach » toc sach
cau luc » cau truc, cau phuc
hau luc » hau loc, nhan luc, hieu luc
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu van ((hau luc) or (cau luc)) van hanh de ((dung tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu van ((hau luc) OR (cau luc)) van hanh de ((dung tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu van ((hau luc) or (cau luc)) van hanh de ((dung tren) or (cua triet))*.