Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuoc » nam thuc, nam thu, nha thuoc
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
thuoc xa » thuoc ma, thuoc va, thuoc la
tvan tai » toan tai, tan tai, tuan tai
sach ky » sac ky, sach ty, sach kem
van tai » von tai, van tuan

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) OR (sach y)) sang tao khoi. liem ha nam thuoc xa ((van tai) or (tvan tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) sang tao khoi. liem ha nam thuoc xa ((van tai) OR (tvan tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach y)) sang tao khoi. liem ha nam thuoc xa ((van tai) or (tvan tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach y)) sang tao khoi. liem ha nam thuoc xa ((van tai) or (tvan tai)) cua triet*.