Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ve » hanh ve, thanh va, thanh vien
cao duc » dao duc, cao suc, giao duc
sach tu » sach thu, cach tu, sach uu
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
sach ty » sach y, sach thu, xach tay
cam duc » cam xuc, pham duc, nam duoc
ve cua » le cua, de cua, te cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ty) OR (sach tu)) tang xa hoi. hieu ve ((cam duc) or (cao duc)) van thanh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ty) OR (sach tu)) tang xa hoi. hieu ve ((cam duc) OR (cao duc)) van thanh ve cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ty) OR (sach tu)) tang xa hoi. hieu ve ((cam duc) or (cao duc)) van thanh ve cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ty) OR (sach tu)) tang xa hoi. hieu ve ((cam duc) or (cao duc)) van thanh ve cua te*.