Perhaps you should try some spelling variations:
van thanh » van tuan
ban thanh » ban hanh, ban hang
dua tren » dung tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam

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 nang x ho. hieu ve cam luc ((van thanh) or (ban thanh)) kem ((dua tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x ho. hieu ve cam luc ((van thanh) OR (ban thanh)) kem ((dua tren) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x ho. hieu ve cam luc ((van thanh) or (ban thanh)) kem ((dua tren) or (cua tre))*.