Perhaps you should try some spelling variations:
cong tuong » cong thuong, cong truong, cong trong
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
tuan cong » thuan cong, luan cong, tran cong
tuong dan » huong dan, tung dan, xuong dan
dan toan » van toan, dan than, manh 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 hanh)) - manh tran tuan cong tuong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien hanh)) - manh tran tuan cong tuong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien hanh)) - manh tran tuan cong tuong dan toan cao*.