Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
su triet » su viet, su tien, ve triet
lang van » dang van, tang van, hoang van
thai su » thai xu, tai su, thap su
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay
sac ky » cac ky, sai ky
luc va » tuc va, loc va
te sac » te sach, te cac, te san

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: te sac ky ((lang xa) OR (lang van)) hoi. hieu va tham ((luc va) OR (duc va)) hanh thai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang xa) OR (lang van)) hoi. hieu va tham ((luc va) or (duc va)) hanh thai su triet~".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang xa) OR (lang van)) hoi. hieu va tham ((luc va) or (duc va)) hanh thai su triet*.