Perhaps you should try some spelling variations:
pham duy » pham duc
van quan » van ban
cua tre » cua te, cuu tre, cua triet
hoi cua » hoi chuc
va quan » tac quan, hai quan, tap quan
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
su cao » cu cao, vu cao, su co
su cac » tu cac, su can, eu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) or (su cao)) ky dang xa hoi. hieu ve pham duy ((va quan) OR (van quan)) hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su cao)) ky dang xa hoi. hieu ve pham duy ((va quan) OR (van quan)) hoi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) or (su cao)) ky dang xa hoi. hieu ve pham duy ((va quan) OR (van quan)) hoi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su cao)) ky dang xa hoi. hieu ve pham duy ((va quan) OR (van quan)) hoi cua tre*.