Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac bac » cac bai, cac ban, cac cach
bac van » bach van, cac van, ban van
bi va » bo va
vu va » vu van, tu va, su va

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 lang xa hoi. hieu viec cac bac van hanh ((bi va) or (vu va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu viec cac bac van hanh ((bi va) OR (vu va)) triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu viec cac bac van hanh ((bi va) or (vu va)) triet*.