Perhaps you should try some spelling variations:
thanh dan » thanh san, thanh van, thanh dat
ban thanh » ban hanh, ban hang
kho tang » cao tang
cao duc » dao duc, cao suc, giao duc
ky tang » ky nang, ky dang, ky trong
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
su sac » su sach, su cac, su xac
dan va » doan va, dan ca, ban va
thiet » thieu

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 ((ky tang) or (kho tang)) xa hoi. hieu ve ((cam duc) or (cao duc)) ban thanh dan va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (kho tang)) xa hoi. hieu ve ((cam duc) OR (cao duc)) ban thanh dan va thiet.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) xa hoi. hieu ve ((cam duc) or (cao duc)) ban thanh dan va thiet*.