Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
kho tang » cao tang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
cua tre » cuu tre, cua triet, dua tren
su sac » su sach, su cac, su xac
ve cam » ve cham, ve cac, va cam
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: su sac ((kho tang) or (ky dang)) xa hoi. hieu ve cam duc ban thanh san ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((kho tang) OR (ky dang)) xa hoi. hieu ve cam duc ban thanh san ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((kho tang) or (ky dang)) xa hoi. hieu ve cam duc ban thanh san ((cua tre) OR (cua te))*".