Perhaps you should try some spelling variations:
cac thoi » cac toi, cac hop, cac tro
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac thu » cach thuc
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
san ky » sang ky, dan ky, ban ky
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

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