Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((dang xa) or (lang xa)) hoi. hieu qua cam xuc van hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((dang xa) OR (lang xa)) hoi. hieu qua cam xuc van hanh vi cua viet*.