Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo phuong » theo luong, thi phuong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
nho thuong » nho truong, cho thuong, pho thuong
doan phan » doanh phan, toan phan, dan phan
trung va » truong va, trang va, trung ha
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) OR (chieu sang)) - thanh trung va ((theo phuong) or (nho thuong)) doan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - thanh trung va ((theo phuong) OR (nho thuong)) doan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - thanh trung va ((theo phuong) or (nho thuong)) doan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - thanh trung va ((theo phuong) or (nho thuong)) doan phan cau*.