Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tong thong » thong thong, dong thong, thong thuong
cong thong » cong thuong, cong trong, dong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
toan cao » toan tap
toan ban » van 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 - hanh tranh cua ((tong thong) OR (cong thong)) tan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tranh cua ((tong thong) OR (cong thong)) tan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh tranh cua ((tong thong) OR (cong thong)) tan ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tranh cua ((tong thong) OR (cong thong)) tan ((toan cao) or (toan ban))*.