Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
thanh trung » thanh tung
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong bang » cuong bang, dong bang, hong bang
huong cau » thuong chau, huong dan, huong cua
trung su » trung vu, trong su, trung du

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) xanh - thanh trung su dung cong bang ((huong cau) or (phuong cham))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) xanh - thanh trung su dung cong bang ((huong cau) OR (phuong cham)).
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) xanh - thanh trung su dung cong bang ((huong cau) or (phuong cham))*.