Perhaps you should try some spelling variations:
ngay sinh » ngay kinh, nghe sinh, nhan sinh
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
may sinh » may tinh, cay sinh, va sinh
vien cua » viec cua, dien cua, tien cua
cho hoc » co hoc, khoa hoc
nam luc » nang luc, nhan luc, nam thuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
co hoi » co hoc, co loi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((cho hoc) or (co hoi)). hieu van nam luc ((may sinh) OR (ngay sinh)) vien cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((cho hoc) OR (co hoi)). hieu van nam luc ((may sinh) OR (ngay sinh)) vien cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((cho hoc) or (co hoi)). hieu van nam luc ((may sinh) OR (ngay sinh)) vien cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((cho hoc) or (co hoi)). hieu van nam luc ((may sinh) OR (ngay sinh)) vien cua triet*.