Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
va hanh » van hanh, va thanh, va danh
so sanh » do sanh
lang xa » lang ha, dang xay, lang van
va cai » va cac, va bai, va dai
sanh y » sinh y, anh y, hanh y
ve tai » te tai, de tai, le tai
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
y lang » o lang, _ lang, tay lang
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: so sanh y lang xa hoi. hieu ((((va cai) or (ve tai))) or (ve cac)) luc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y lang xa hoi. hieu ((((va cai) OR (ve tai))) OR (ve cac)) luc va hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: so sanh y lang xa hoi. hieu ((((va cai) or (ve tai))) or (ve cac)) luc va hanh vi cua viet*.