Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dieu cua » dieu tra
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
sach ty » sach y, sach tu, sach thu
cam tuc » cam xuc, cam tu, nam thuc
ty nang » ky nang, ty xang, ty hang
van cam » van nam, van lam, van cau
tuc va » thuc va, truc va, tuc xa
nang o » nang co, nang ho, nang ro
vi cua » vai cua
di cua » dai cua, doi cua, de cua
o hoi » co hoi, o hoc, o hai

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 ty nang o hoi. hieu van cam tuc va hanh ((((vi cua) or (di cua))) or (dieu cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang o hoi. hieu van cam tuc va hanh ((((vi cua) OR (di cua))) OR (dieu cua)) tre*.