Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
hoa hoi » khoa hoi, hoa doi, hoc hoi
qua cam » qua cham, qua cac, qua ca
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, su can
cam tu » cam thu, nam tu, dam tu
vi cua » vai cua, di cua

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 ky nang ((xa hoi) or (((hoa hoi) OR (hoa hoc)))). hieu qua cam tu va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang ((xa hoi) OR (((hoa hoi) OR (hoa hoc)))). hieu qua cam tu va thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang ((xa hoi) or (((hoa hoi) OR (hoa hoc)))). hieu qua cam tu va thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang ((xa hoi) or (((hoa hoi) OR (hoa hoc)))). hieu qua cam tu va thanh vi cua tre*.