Perhaps you should try some spelling variations:
can thuc » dan thuc, cay thuc, san thuc
van thuc » va thuc, dan thuc, van thu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, hoi cua, lai cua
tu dan » tuc dan, tu ban, cu dan
dan ky » van ky

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

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