Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
thanh trung » thanh tung
phuong cau » huong cau, phuong cach, thuong chau
doi chieu » doc hieu, doi chi, mot chieu
trung qua » trung quan, trong qua, trung cua
dung cong » dung trong
cong bang » cuong bang, dong bang, hong bang
ho chieu » theo chieu, hoc thieu, mot chieu
qua dung » quang dung, su dung, qua song

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (doi chieu)) xanh - thanh trung qua dung cong bang ((phuong cau) or (phuong cham))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - thanh trung qua dung cong bang ((phuong cau) OR (phuong cham)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - thanh trung qua dung cong bang ((phuong cau) or (phuong cham))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - thanh trung qua dung cong bang ((phuong cau) or (phuong cham))*.