Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach kho » bach khoa, sach dao, sach nha
kho tang » cao tang
dua tren » dung tren
thanh vi » hanh vi, thanh va, thanh ve
te sach » toc sach
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, vu cham
tang xa » trang xa, tang ma, lang xa
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cac, va cam, ve cai

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 kho tang xa hoi. hieu ((ve cam) OR (ve cham)) duc van thanh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach kho tang xa hoi. hieu ((ve cam) OR (ve cham)) duc van thanh vi ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach kho tang xa hoi. hieu ((ve cam) OR (ve cham)) duc van thanh vi ((dua tren) or (cuu tre))*".