Perhaps you should try some spelling variations:
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cu tren » tu tren
tu bai » tu ban, tu bat, te bai
bai ky » ban ky, sai ky, bac ky
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
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 bai ky nang xa hoi. hieu va cam xuc va hanh vi ((((dua tren) or (cua te))) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu bai ky nang xa hoi. hieu va cam xuc va hanh vi ((((dua tren) OR (cua te))) OR (cu tren)).
• Adding a wildcard symbol may retrieve word variants: tu bai ky nang xa hoi. hieu va cam xuc va hanh vi ((((dua tren) or (cua te))) or (cu tren))*.