Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
dong hoa » dong hoc, dong co
cua tre » cua te, cuu tre, dua tren
hanh va » hang va, hanh vi
xua van » xua va, qua van, cua van
nam xua » nam cua, nam mua, nam qua
co sach » bo sach, cuon sach, hoc sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky dong » ly dong, ky dang, ky cong
so sanh » do sanh
hieu tu » chieu tu, hieu tuc, hien tu
tu nam » su nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co sach) or (so sanh)) ky dong hoa hoi. hieu tu nam xua van hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co sach) OR (so sanh)) ky dong hoa hoi. hieu tu nam xua van hanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((co sach) or (so sanh)) ky dong hoa hoi. hieu tu nam xua van hanh va ((cua tre) or (cua triet))*.