Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
lang van » dang van, tang van, hoang van
te sach » toc sach
van anh » tuan anh, van minh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, sang tao
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
vi cua » vai cua, di 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 ky ((sang ma) or (lang van)) hoi. hieu ve cac xuc ((van anh) OR (van thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((sang ma) OR (lang van)) hoi. hieu ve cac xuc ((van anh) OR (van thanh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((sang ma) or (lang van)) hoi. hieu ve cac xuc ((van anh) OR (van thanh)) vi cua tre*".