Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
thu san » thuy san, phu san, thuat san
thu ban » thu hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
va vanh » va van, va danh, va hanh
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu san) or (thu ban)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac duc va vanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu san) OR (thu ban)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac duc va vanh dai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu san) or (thu ban)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac duc va vanh dai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((thu san) or (thu ban)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac duc va vanh dai cua tu*.