Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van chat » cao chat
hanh tai » thanh tai, hang tai, han tai
dang xay » dang van, van xay
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van dau » van dao, phan dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang xa) or (dang xay)) hoi. hieu ((van dau) or (van chat)) thuc va hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (dang xay)) hoi. hieu ((van dau) OR (van chat)) thuc va hanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (dang xay)) hoi. hieu ((van dau) or (van chat)) thuc va hanh tai cua triet*.