Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cac tuc » cac toc, cac tu, cac tac
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang xa hoi. hieu vien cac tuc va hanh ((vi cua) or (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. hieu vien cac tuc va hanh ((vi cua) OR (hai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. hieu vien cac tuc va hanh ((vi cua) or (hai cua)) triet*.