Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh ban » thanh san, thanh van, thanh bac
cua triet » cua viet, su triet, va triet
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » hieu qua
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
ban cua » ban quan
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang xa hoi. ((hieu va) OR (lieu va)) cac duc ban thanh ban cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky tang xa hoi. ((hieu va) OR (lieu va)) cac duc ban thanh ban cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. ((hieu va) OR (lieu va)) cac duc ban thanh ban cua triet*.