Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
cua triet » cua viet, su triet, va triet
thuc day » thuc dan, thuc vat
thanh va » thanh van, hanh va, thanh ha
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
vu pham » su pham, vi pham, v pham
vu kham » vu khanh
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky dang xa hoi. hieu ((vu pham) OR (vu kham)) thuc day thanh va cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xa hoi. hieu ((vu pham) OR (vu kham)) thuc day thanh va cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xa hoi. hieu ((vu pham) OR (vu kham)) thuc day thanh va cua triet*.