Perhaps you should try some spelling variations:
thieu vien » thieu nien, thieu bien, thu vien
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van ban
vien cac » vien bach, vien dai, vien da
cac luc » cau luc, coc luc, cac nuoc
nang xa » lang xa, nang ma, mang xa
van anh » van thanh, tuan anh, van minh
vai cua » dai cua, hai cua, lai cua
sac ky » cac ky, sai ky
te sac » te sach, te cac, te 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 sac ky ((nang xa) or (nang x)) hoi. thieu vien cac luc ((van hanh) OR (van anh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang x)) hoi. thieu vien cac luc ((van hanh) OR (van anh)) vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang xa) or (nang x)) hoi. thieu vien cac luc ((van hanh) OR (van anh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang x)) hoi. thieu vien cac luc ((van hanh) OR (van anh)) vai cua triet*.