Perhaps you should try some spelling variations:
thanh dam » thanh dat, thanh nam, thanh tam
va triet » va thiet, va trien, ve triet
hanh dam » hanh lam, hanh nam, hang dam
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ve cam xuc va ((hanh dam) OR (thanh dam)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hanh) OR (thi thanh)) xa hoi. hieu ve cam xuc va ((hanh dam) OR (thanh dam)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ve cam xuc va ((hanh dam) OR (thanh dam)) va triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hanh) or (thi thanh)) xa hoi. hieu ve cam xuc va ((hanh dam) OR (thanh dam)) va triet*.