Perhaps you should try some spelling variations:
cong tuong » cong thuong, cong truong, cong trong
tuong manh » duong manh, luong manh, tung manh
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
tran tuan » tran quang, tran thanh, tranh luan
tran xuan » tran quang, tran van
manh toan » thanh toan, anh tuan, tinh 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) OR (tran xuan)) cong tuong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - manh ((tran tuan) OR (tran xuan)) cong tuong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien hanh)) - manh ((tran tuan) OR (tran xuan)) cong tuong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - manh ((tran tuan) OR (tran xuan)) cong tuong manh toan cao*.