Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
dan thanh » dang thanh, danh thanh, ban thanh
so sach » so sanh, bo sach, co sach
cam hoc » cao hoc, am hoc, cam hoa
doi cua » dai cua, hoi cua
y nang » ly nang, v nang, may nang
va cam » va cham, va cac, va cao
cua su » qua su

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 ((y nang) OR (ky nang)) xa hoi. lieu va cam hoc dan thanh doi cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y nang) OR (ky nang)) xa hoi. lieu va cam hoc dan thanh doi cua su".
• Adding a wildcard symbol may retrieve word variants: so sach ((y nang) OR (ky nang)) xa hoi. lieu va cam hoc dan thanh doi cua su*.