Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
khach ky » thanh ky
va thanh » gia thanh, va tinh, le thanh
sinh cua » manh cua, dinh cuu, sinh va
hanh ky » hanh kem
qua cam » qua cham, qua cac, qua ca
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((khach ky) OR (hanh ky)) nang x hoi. hieu qua cam xuc ((va thanh) or (ban thanh)) sinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((khach ky) OR (hanh ky)) nang x hoi. hieu qua cam xuc ((va thanh) OR (ban thanh)) sinh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((khach ky) OR (hanh ky)) nang x hoi. hieu qua cam xuc ((va thanh) or (ban thanh)) sinh cua tre".
• Adding a wildcard symbol may retrieve word variants: vu ((khach ky) OR (hanh ky)) nang x hoi. hieu qua cam xuc ((va thanh) or (ban thanh)) sinh cua tre*.