Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu nang » thu hang, thu bang, tho nang
thanh va » thanh van, hanh va, thanh ha
thi nang » thi cong, ki nang, thi hanh
te sach » toc sach
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cua cau » cua cac, cua chu, cua cay
hieu va » lieu va, hieu qua
cho hoc » khoa hoc
va cua » va chua, via cua, ca 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 ((thu nang) OR (thi nang)) ((cho hoc) or (co hoc)). hieu va cac xuc van thanh va cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu nang) OR (thi nang)) ((cho hoc) OR (co hoc)). hieu va cac xuc van thanh va cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu nang) OR (thi nang)) ((cho hoc) or (co hoc)). hieu va cac xuc van thanh va cua cau*".