Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh
nong cong » cong cong, tong cong, nang cong
cua nong » cua cong, cuu nong, cua dong
cong anh » cong danh, dong anh, hong anh
tuan cu » tuan tu, quan cua, tuan thu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) OR (chieu xanh)) - ((hanh trinh) or (hanh chinh)) cua nong cong anh tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - ((hanh trinh) OR (hanh chinh)) cua nong cong anh tuan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - ((hanh trinh) or (hanh chinh)) cua nong cong anh tuan cu".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - ((hanh trinh) or (hanh chinh)) cua nong cong anh tuan cu*.