Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cuu thuc » cuu tac
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va
hanh te » hanh tu, hanh ve, hanh de
su sai » su tai, su hai, su dai
sai ky » sac ky
te cua » tue cua, le cua, de cua

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: su sai ky nang xa hoi. ((hieu ve) OR (((hieu va) OR (hieu qua)))) cuu thuc van hanh te cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky nang xa hoi. ((hieu ve) or (((hieu va) OR (hieu qua)))) cuu thuc van hanh te cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sai ky nang xa hoi. ((hieu ve) or (((hieu va) OR (hieu qua)))) cuu thuc van hanh te cua triet*.