Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
toan thuan » toan thuong, toan thuc, toan phan
thuan cong » thuat cong, thuan phong, thuan trong
cong tuong » cong thuong, cong truong, cong trong
hien xanh » hien hanh, chieu xanh, hien khanh
manh toan » thanh toan, anh tuan, tinh toan
tuong dan » huong dan, tung dan, xuong dan
dan toan » van toan, dan than, xuan toan
toan cao » toan ban, toan tap

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)) - manh toan thuan cong tuong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - manh toan thuan cong tuong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - manh toan thuan cong tuong dan toan cao*.