Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
tu ban » thu ban, te ban
ban ky » van ky, dan ky
va cao » va cac, va co, va dao
ve cua » de cua, te cua, ve cum
le cua » ly cua

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

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