Perhaps you should try some spelling variations:
cong luong » cong thuong, nang luong, cong dong
luong toan » luong thanh, truong toan, luong tai
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
vat nhung » va nhung, vai nhung, ve nhung
vap nhung » va nhung, ve nhung, voi nhung
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)) - canh tranh ((vat nhung) or (vap nhung)) cong luong toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - canh tranh ((vat nhung) OR (vap nhung)) cong luong toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien hanh)) - canh tranh ((vat nhung) or (vap nhung)) cong luong toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien hanh)) - canh tranh ((vat nhung) or (vap nhung)) cong luong toan cao*.