Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
van hac » van hoc, van ha, van hai
lam cua » nam cua, lam chat
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
nang xa » lang xa, nang ma, mang xa
sach ky » sac ky, sach y, sach ty
van bac » van ban, van bao, dan bac
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang xa) or (nang x)) hoi. hieu ((van bac) OR (van hac)) xuc va hanh lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang x)) hoi. hieu ((van bac) OR (van hac)) xuc va hanh lam cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) or (nang x)) hoi. hieu ((van bac) OR (van hac)) xuc va hanh lam cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang x)) hoi. hieu ((van bac) OR (van hac)) xuc va hanh lam cua triet*.