Perhaps you should try some spelling variations:
lanh tranh » canh tranh, lan tranh, sach tranh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 - ((lanh tranh) OR (hanh trinh)) cua thong cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((lanh tranh) OR (hanh trinh)) cua thong cong dan toan ban*".