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
thuoc xa » thuoc ma, thuoc va, thuoc la
tvan tai » toan tai, tan tai, tuan tai
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
lieu ha » lieu nha, lieu va, lieu ma
sach ky » sac ky, sach y, sach ty
van tai » von tai, van tuan
tu sach » thu sach, su sach, te sach

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 sang tao hoi. ((lieu ha) OR (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 sang tao hoi. ((lieu ha) OR (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 sang tao hoi. ((lieu ha) OR (liem ha)) nam thuoc xa ((van tai) or (tvan tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang tao hoi. ((lieu ha) OR (liem ha)) nam thuoc xa ((van tai) or (tvan tai)) cua triet*.