Perhaps you should try some spelling variations:
van giao » nang giao, toan giao, dan gian
nang xa » nang x, lang xa, nang ma
va giao » va giai, va gia, ve giao
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
tu dan » tuc dan, tu ban, tu can
cu dan » cua dan, ca dan, co dan
vi cua » vai cua, di 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: ((tu dan) or (cu dan)) ky nang xa hoi. hieu ((va giao) OR (van giao)) duc va tinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu dan) OR (cu dan)) ky nang xa hoi. hieu ((va giao) OR (van giao)) duc va tinh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu dan) or (cu dan)) ky nang xa hoi. hieu ((va giao) OR (van giao)) duc va tinh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu dan) or (cu dan)) ky nang xa hoi. hieu ((va giao) OR (van giao)) duc va tinh vi cua te*.