Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan duc » nhan duoc, nhan luc, phan duc
su sach » so sach, vu sach
te sach » toc sach
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
va tinh » may tinh
tinh di » tinh doi, trinh di, tinh da
di cua » dai cua, doi cua, de cua

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) or (te sach)) ky dang xa hoi. hieu va nhan duc va tinh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky dang xa hoi. hieu va nhan duc va tinh di cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky dang xa hoi. hieu va nhan duc va tinh di cua triet*.