Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
thu nang » thu hang, thu bang, tho nang
thanh de » hanh de, thanh ve, thanh do
thi nang » thi cong, ki nang, thi hanh
cac xuc » cac nuoc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
cua cau » cua cac, cua chu, cua cay
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((thu nang) OR (thi nang)) cho hoc. hieu ve ((cac xuc) or (cam xuc)) van thanh de cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((thu nang) OR (thi nang)) cho hoc. hieu ve ((cac xuc) OR (cam xuc)) van thanh de cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((thu nang) OR (thi nang)) cho hoc. hieu ve ((cac xuc) or (cam xuc)) van thanh de cua cau*".