Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
te cach » ve cach, te sach, tu cach
van anh » tuan anh, van minh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cach tu » cach thuc
toc hoc » toan hoc, duoc hoc
hoc hoc » hoc hoa, hoc hoi, duoc hoc
tu nang » tru nang, tu nong, tu nano
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
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 cach tu nang ((hoc hoc) OR (toc hoc)). hieu ve cac xuc ((van anh) or (van thanh)) va cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cach tu nang ((hoc hoc) OR (toc hoc)). hieu ve cac xuc ((van anh) OR (van thanh)) va cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cach tu nang ((hoc hoc) OR (toc hoc)). hieu ve cac xuc ((van anh) or (van thanh)) va cua cau*".