Perhaps you should try some spelling variations:
thanh ban » thanh san, thanh van, thanh bac
va triet » va thiet, va trien, ve triet
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
tu van » tu va
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu van ky ((nang xa) OR (lang xa)) hoi. hieu ve cam ((xuc van) OR (xuc ban)) thanh ban va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu van ky ((nang xa) OR (lang xa)) hoi. hieu ve cam ((xuc van) or (xuc ban)) thanh ban va triet~".
• Adding a wildcard symbol may retrieve word variants: tu van ky ((nang xa) OR (lang xa)) hoi. hieu ve cam ((xuc van) or (xuc ban)) thanh ban va triet*.