Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuoc » nam thuc, nam thu, nha thuoc
thien van » thi van
thuoc va » thuc va, thuoc ma, thuong va
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
su sach » so sach, vu sach
hanh va » hang va
tu sach » thu sach, te sach, tu cach

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) or (su sach)) ky tang xa hoi. thien van nam thuoc va ((hanh va) OR (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky tang xa hoi. thien van nam thuoc va ((hanh va) OR (hanh vi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky tang xa hoi. thien van nam thuoc va ((hanh va) OR (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky tang xa hoi. thien van nam thuoc va ((hanh va) OR (hanh vi)) cua triet*.