Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
toan tai » doanh tai, toan ban, von tai
toan cao » toan ban
toan tap » 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 - hanh tranh cua thong cong dan ((toan tai) or (((toan cao) or (toan tap))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tranh cua thong cong dan ((toan tai) OR (((toan cao) OR (toan tap)))).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tranh cua thong cong dan ((toan tai) or (((toan cao) or (toan tap))))*.