Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
danh dien » dinh dien, danh kien, danh lien
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
danh di » danh du, xanh di, danh gia
xu va » xu van, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang xa hoi. hieu van chao xu va ((danh di) or (danh dien)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. hieu van chao xu va ((danh di) OR (danh dien)) cua triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu van chao xu va ((danh di) or (danh dien)) cua triet*.