Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ve » hanh ve, thanh va, thanh vien
toc sach » hoc sach, doc sach, thuoc sach
xang cho » sang cho, hang cho, tang cho
hieu van » hieu va, thien van, lieu va
cac xuc » cac nuoc, chat xuc, cac cuoc
cho hoc » co hoc, khoa hoc
cua cau » cua cac, cua chu, cua cay
ve cua » le cua, de cua, te cua

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) OR (toc sach)) ty xang cho hoc. hieu van ((cac xuc) or (cam xuc)) van thanh ve cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty xang cho hoc. hieu van ((cac xuc) OR (cam xuc)) van thanh ve cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty xang cho hoc. hieu van ((cac xuc) or (cam xuc)) van thanh ve cua cau*".