Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh duc » thach duc, than duc, thinh duc
ban thanh » ban hanh, ban hang
van hanh » van thanh, ban hanh, van anh
doc sach » hoc sach, toc sach, nuoc sach
hieu ban » hieu van, dieu ban, lieu ban
ky cong » ke cong, ly cong, khu cong
duc van » duc va, duc tan, duc manh
ky long » sy long, ky trong, khi long
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ((ky long) or (ky cong)) ha hoi. hieu ban thanh duc van hanh vi ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ((ky long) OR (ky cong)) ha hoi. hieu ban thanh duc van hanh vi ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: doc sach ((ky long) or (ky cong)) ha hoi. hieu ban thanh duc van hanh vi ((cua te) or (cua triet))*.