Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
tinh lap » trinh lap, tinh lao, dinh lap
va tinh » may tinh
su sach » vu sach
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac

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