Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
van hanh » ban hanh, van anh, van ban
so sach » so sanh, bo sach, co sach
dang xa » dang xay, lang xa, dang ha
qua cam » qua cham, qua cac, qua ca
y dang » ky dang, 2 dang, _ dang
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: so sach y dang xa hoi. hieu qua cam xuc ((van hanh) OR (van thanh)) di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y dang xa hoi. hieu qua cam xuc ((van hanh) OR (van thanh)) di cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach y dang xa hoi. hieu qua cam xuc ((van hanh) OR (van thanh)) di cua triet*.