Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
dang xay » dang van, van xay
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
san ky » sang ky, van ky, dan ky
luc va » tuc va, loc va
te san » te ban, ke san, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky ((lang xa) OR (dang xay)) hoi. hieu va tham ((luc va) or (duc va)) hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky ((lang xa) OR (dang xay)) hoi. hieu va tham ((luc va) OR (duc va)) hanh thai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky ((lang xa) OR (dang xay)) hoi. hieu va tham ((luc va) or (duc va)) hanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: te san ky ((lang xa) OR (dang xay)) hoi. hieu va tham ((luc va) or (duc va)) hanh thai cua triet*.