Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cap » vien cac, vien cao, vien can
cap nuoc » dat nuoc
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. hieu vien cap nuoc va hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. hieu vien cap nuoc va hanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu vien cap nuoc va hanh vi ((cua te) or (cua tu))*.