Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
sach ty » sach y, sach tu, sach thu
xuc van » duc van, luc van, vuc van
ty nang » ky nang, ty xang, ty hang
tu sach » thu sach, su sach, te sach
ve cam » ve cham, ve cac, va cam
sam va » nam va, dam va, cam va
x hoi » xa hoi, o hoi, x ho
am va » nam va, dam va, cam va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ((ve cam) OR (vien cac)) xuc van hanh ((sam va) OR (am va)) triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ((ve cam) or (vien cac)) xuc van hanh ((sam va) or (am va)) triet*.