Perhaps you should try some spelling variations:
tang van » dang van, hoang van, trong van
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
sanh ky » hanh ky, sang ky, nganh ky
so sanh » do sanh
lang xa » lang ha, dang xay, lang van
su viet » so viet
ve cac » vien cac

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 ky ((lang xa) or (tang van)) hoi. hieu ((ve cac) or (va cac)) tu va hanh va su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky ((lang xa) OR (tang van)) hoi. hieu ((ve cac) OR (va cac)) tu va hanh va su viet.
• Adding a wildcard symbol may retrieve word variants: so sanh ky ((lang xa) or (tang van)) hoi. hieu ((ve cac) or (va cac)) tu va hanh va su viet*.