Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dan thanh » dang thanh, danh thanh, ban thanh
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
hac thuc » hoc thuc, ha thuc, thach thuc
thuc dan » thuc hanh, hoc dan, thuc vat
thanh ha » thanh hoa, thanh hai, nhanh ha
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hac » van hac, va khac, va cac
ha cua » hoa cua, hai cua, nha cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky ((nang xa) or (dang xay)) hoi. lieu va hac thuc dan thanh ha cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang xa) OR (dang xay)) hoi. lieu va hac thuc dan thanh ha cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((nang xa) or (dang xay)) hoi. lieu va hac thuc dan thanh ha cua triet*.