Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
qua pham » quan pham, quy pham, qua cham
pham duy » pham duc
danh dai » danh dau, danh di, danh sai
sach va » sach xa, sach ha, sach dao
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
va danh » va dinh, va dan, va hanh
duy va » duy vat, duy van, day va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach va ((nang ma) OR (tang ma)) hoi. hieu qua pham duy va danh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach va ((nang ma) OR (tang ma)) hoi. hieu qua pham duy va danh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach va ((nang ma) OR (tang ma)) hoi. hieu qua pham duy va danh dai cua triet*.