Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
phan cong » thanh cong
cua phan » cua nhan, cua phap, cua han
cong van » cong vang, cong san, song van
thai cao » tai cao, thoai cac, thuat cao
tao cao » bao cao, toan cao

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 cua phan cong van ((thai cao) or (tao cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua phan cong van ((thai cao) OR (tao cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua phan cong van ((thai cao) or (tao cao))*.