Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hai truc » hai trac, hang truc, thai thuc
dai truc » dai thuc, doan truc, dai trung
ban hanh » ban hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. hieu van ((hai truc) or (dai truc)) ((ban hanh) or (van ban)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van ((hai truc) OR (dai truc)) ((ban hanh) OR (van ban)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van ((hai truc) or (dai truc)) ((ban hanh) or (van ban)) vi cua te*.