Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
hien nhanh » hien hanh, thien thanh, tien thanh
thong cong » trong cong, thong thong, phong chong
hien xanh » hien hanh, chieu xanh, hien khanh
trong tao » trong tan, trong tho, trong tai
tong cong » trong cong, cong cong, dung cong
tuan phan » luan phan, toan phan, tuan pham
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 ((hien xanh) or (hien nhanh)) - thanh trong tao ((thong cong) OR (tong cong)) tuan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh trong tao ((thong cong) OR (tong cong)) tuan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - thanh trong tao ((thong cong) OR (tong cong)) tuan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - thanh trong tao ((thong cong) OR (tong cong)) tuan phan cau*.