Perhaps you should try some spelling variations:
ve triet » va trien, su triet
dang van » hoang van, hang va
van hanh » van thanh, ban hanh, van anh
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
hanh va » hang va, hanh vi
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac
cac tu » cac thu, cach tu, cac du
tu van » tu va
va ve » va de, va le, va vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((lang xa) or (dang van)) hoi. hieu ve cac tu van hanh va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((lang xa) OR (dang van)) hoi. hieu ve cac tu van hanh va ve triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky ((lang xa) or (dang van)) hoi. hieu ve cac tu van hanh va ve triet*.