Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cao loc » cao toc, cao oc, chon loc
cao hoc » co hoc, cho hoc, chat hoc
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dang xa hoi. hieu va ((cao loc) OR (cao hoc)) va tinh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky dang xa hoi. hieu va ((cao loc) OR (cao hoc)) va tinh vi cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ky dang xa hoi. hieu va ((cao loc) OR (cao hoc)) va tinh vi cua te*.