Perhaps you should try some spelling variations:
luan phan » luan van, luan hoan
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van luan » van quan, van tuan, von luan
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
cau vuc » cau luc, cau truc, cau phuc
vuc van » duc van, luc van, thuc van
y nang » ky nang, ly nang, v nang
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: su sach y nang xa hoi. hieu van cau vuc van luan phan ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu van cau vuc van luan phan ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu van cau vuc van luan phan ((cua te) or (cua triet))*.