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
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
cu tren » tu tren
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
va cam » va cham, va cac, va cao
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 sai ky nang xa hoi. hieu va cam duc 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 sai ky nang xa hoi. hieu va cam duc va hanh vi ((((dua tren) OR (cua te))) OR (cu tren)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang xa hoi. hieu va cam duc va hanh vi ((((dua tren) or (cua te))) or (cu tren))*.