Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh cua » doanh luan
chat doc » chat hoc, chau doc, thuat doc
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
danh ca » dan ca, danh cho, danh gia
tu sach » thu sach, te sach, tu cach
doc va » duoc va, hoc va, duc 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) or (su sach)) ky nang xa hoi. hieu va chat doc va ((danh ca) OR (doanh cua)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. hieu va chat doc va ((danh ca) OR (doanh cua)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang xa hoi. hieu va chat doc va ((danh ca) OR (doanh cua)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. hieu va chat doc va ((danh ca) OR (doanh cua)) cua triet*.