Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
hau loc » huu loc, phau hoc
hanh de » hanh ve, hanh kem
hanh le » thanh le, hanh ve, manh le
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
hau luc » cau luc, nhan luc, hieu luc
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano

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 tu nang xa hoi. hieu van ((hau luc) OR (hau loc)) van ((hanh le) or (hanh de)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. hieu van ((hau luc) OR (hau loc)) van ((hanh le) OR (hanh de)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu van ((hau luc) OR (hau loc)) van ((hanh le) or (hanh de)) su triet".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu van ((hau luc) OR (hau loc)) van ((hanh le) or (hanh de)) su triet*.