Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
danh sai » dung sai, danh bat, danh dau
sai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
hieu le » hieu ve, hieu ly, tieu le
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
hieu he » hieu ve, hiem he, hieu hien
ma hoi » mai hoi, xa hoi, ma hoa
thu va » thuc va, thue va, tu va

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) or (toc sach)) ky sang ma hoi. ((hieu he) OR (hieu le)) nam thu va danh sai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky sang ma hoi. ((hieu he) OR (hieu le)) nam thu va danh sai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky sang ma hoi. ((hieu he) OR (hieu le)) nam thu va danh sai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky sang ma hoi. ((hieu he) OR (hieu le)) nam thu va danh sai cua triet*.