Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc cham » toc thai
van tuan » van quan, van ban, anh tuan
khu cong » thu cong, thi cong, cuu cong
tuan va » toan va, luan va, quan va
xuc van » duc van, luc van, vuc van
so sach » so sanh, bo sach, co sach
tu cham » thi cham
ky dong » ly dong, ky dang, ky cong
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: so sach ((ky dong) or (khu cong)) hoa hoc. hien ((tu cham) OR (toc cham)) xuc van tuan va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky dong) OR (khu cong)) hoa hoc. hien ((tu cham) OR (toc cham)) xuc van tuan va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky dong) or (khu cong)) hoa hoc. hien ((tu cham) OR (toc cham)) xuc van tuan va cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ((ky dong) or (khu cong)) hoa hoc. hien ((tu cham) OR (toc cham)) xuc van tuan va cua triet*.