Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
hieu cach » hieu cac, chieu sach, hieu ca
tuong cua » truong cua, huong cua, thong cua
doc hieu » toc thieu, hoc thieu, hoc hien
dong ban » dong bang, dong san, dong bac
khan ap » khan cap, khan dam
han ap » han tap, dan ap, han phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu cach - thanh tuong cua cong dong ban ((khan ap) or (han ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu cach - thanh tuong cua cong dong ban ((khan ap) OR (han ap)).
• Adding a wildcard symbol may retrieve word variants: doc hieu cach - thanh tuong cua cong dong ban ((khan ap) or (han ap))*.