Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
dang xay » dang van, van xay
vu sach » vu bach, su sach, vu khach
xuc van » duc van, luc van, vuc van
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
vi cua » vai cua
di cua » dai cua, doi cua, de 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 ky ((nang ma) or (dang xay)) hoi. hieu vu cham xuc van hanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang ma) OR (dang xay)) hoi. hieu vu cham xuc van hanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang ma) or (dang xay)) hoi. hieu vu cham xuc van hanh ((vi cua) or (di cua)) tre*.