Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong bang » cuong bang, dong bang, hong bang
huong cau » thuong chau, huong dan, huong cua

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

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