Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham cuu » cap cuu, chat cua
cham luc » cham soc, nhan luc, chat lua
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va tinh » may tinh
tinh di » tinh doi, trinh di, tinh da
tu cach » tu cac
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky nang x hoi. hieu va ((cham luc) OR (cham cuu)) va tinh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang x hoi. hieu va ((cham luc) OR (cham cuu)) va tinh di cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky nang x hoi. hieu va ((cham luc) OR (cham cuu)) va tinh di cua triet*".