Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vien dai » hien dai
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien da, gian cac
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
va cua » va chua, via cua, ca 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: te ((sach ky) OR (sac ky)) nang xa hoi. thieu ((vien cac) OR (vien dai)) xuc van hanh va cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) nang xa hoi. thieu ((vien cac) OR (vien dai)) xuc van hanh va cua triet~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) nang xa hoi. thieu ((vien cac) OR (vien dai)) xuc van hanh va cua triet*.