Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
cach le » cach de, cach ben, cach lam
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
cac le » cac he, mac le, bac le

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((cac le) OR (cach le)) nang xa hoi. hieu qua cam xuc van hanh vi ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cac le) OR (cach le)) nang xa hoi. hieu qua cam xuc van hanh vi ((cua tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((cac le) OR (cach le)) nang xa hoi. hieu qua cam xuc van hanh vi ((cua tre) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: hoc ((cac le) OR (cach le)) nang xa hoi. hieu qua cam xuc van hanh vi ((cua tre) or (cau tren))*.