Perhaps you should try some spelling variations:
can thanh » ban thanh, van thanh, cac thanh
hieu viec » nhieu viec, hieu ve, sieu viet
cua viet » ca viet, hoa viet, cua vat
viec cac » vien cac, viec cua, viec lam
san cua » sang cua, ban cua, dan cua
hoc can » hoc dan, hoc cao, hoc cac
cac hoc » cach hoc, cac hop, bac hoc
vu sach » vu bach, su sach, vu khach
ly hang » ly quang
ty nang » ky nang, ty hang, ly nang

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) or (ty xang))) or (ly hang)) xa hoi. hieu viec cac hoc can thanh san cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((((ty nang) OR (ty xang))) OR (ly hang)) xa hoi. hieu viec cac hoc can thanh san cua viet.
• Adding a wildcard symbol may retrieve word variants: vu sach ((((ty nang) or (ty xang))) or (ly hang)) xa hoi. hieu viec cac hoc can thanh san cua viet*.