Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh vap » tranh va, tranh van, tranh chap
vap nhung » va nhung, ve nhung, voi nhung
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tai
toan tap » toan ban
toan cao » toan ban

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 - canh tranh vap nhung cong tan ((((toan cau) OR (toan tap))) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh vap nhung cong tan ((((toan cau) OR (toan tap))) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh vap nhung cong tan ((((toan cau) OR (toan tap))) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh vap nhung cong tan ((((toan cau) OR (toan tap))) or (toan cao))*.