Perhaps you should try some spelling variations:
hoc tang » hoc bang, hoc tan, hoc tieng
te sach » toc sach
vai cua » hai cua, lai cua, bai cua
hoc ban » hoc bang, hoc dan, hoc bai
sach ly » sach y, sach lo, sach ty
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
ly nang » ky nang, ly hang, ly vang
x hoi » xa hoi, o hoi, x ho

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