Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh va, hanh tai, hanh van
van chat » cao chat
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
van cau » van dau, van hau, toan cau
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
tu sach » thu sach, su sach, te sach
te xa » te va

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: tu sach ly nang mai hoi. hieu ((van cau) OR (van chat)) te xa ((hanh vai) OR (hanh vi)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang mai hoi. hieu ((van cau) OR (van chat)) te xa ((hanh vai) or (hanh vi)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang mai hoi. hieu ((van cau) OR (van chat)) te xa ((hanh vai) or (hanh vi)) cua triet*.