Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hang vai » hang tai, hang hai, hang vi
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham soc » cham soc, tham nuoc, thai son
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
soc va » hoc va, loc va, doc va

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

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