Perhaps you should try some spelling variations:
khang tiet » thang tien, hang tieu, hang tien
cua triet » cua viet, su triet, va triet
van khang » van khanh, van thanh, van quang
hieu van » hieu va, thien van, lieu va
tiet cua » tiep cua, tien cua, biet cua
thuc van » thuc vat, thuc dan, thuc va
cau thuc » cau truc, cuu thuc, can thuc
van cau » van dau, van hau, van chat
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
vu sach » vu bach, su sach, vu khach
tu sach » thu sach, su sach, te sach
ma hoi » mai hoi, xa hoi, ma hoa

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 (vu sach)) ky sang ma hoi. hieu van cau thuc van khang tiet cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ky sang ma hoi. hieu van cau thuc van khang tiet cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ky sang ma hoi. hieu van cau thuc van khang tiet cua triet*.