Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
hoc ban » hoc bang, hoc dan, hoc bai
soc ban » coc ban, so ban, soc ba
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ly nang ((xa hoi) or (o hoi)). hieu van cham ((soc ban) OR (hoc ban)) thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((xa hoi) OR (o hoi)). hieu van cham ((soc ban) OR (hoc ban)) thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang ((xa hoi) or (o hoi)). hieu van cham ((soc ban) OR (hoc ban)) thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((xa hoi) or (o hoi)). hieu van cham ((soc ban) OR (hoc ban)) thanh vai cua te*.