Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
va triet » va thiet, va trien, ve triet
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
coc tuc » coc luc, hoc thuc, doc thuc
su sac » su sach, su cac, su xac
ve coc » ve cuoc, ve cac, ve co
tuc va » thuc va, truc va, tuc xa
di va » dai va, di vao, doi va

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 lang) or (ky nang)) xa hoi. hieu ve coc tuc va thanh di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky lang) OR (ky nang)) xa hoi. hieu ve coc tuc va thanh di va triet.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky lang) or (ky nang)) xa hoi. hieu ve coc tuc va thanh di va triet*.