Perhaps you should try some spelling variations:
te sach » toc sach
vai cua » dai cua, lai cua, bai cua
lo nang » ho nang, ly nang, loai nang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
soc ban » coc ban, so ban, soc ba
sach lo » sach dao, sach doi, sach hoi
hai cua » thai cua, dai cua, hoi cua
hoc ban » hoc bang, hoc dan, hoc bai

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