Perhaps you should try some spelling variations:
thieu xanh » thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu manh » hieu nganh, dieu hanh, hien hanh
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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))) or (hieu manh)) - hanh trinh va nhung cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (chieu xanh))) OR (hieu manh)) - hanh trinh va nhung cong dan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thieu xanh) OR (chieu xanh))) or (hieu manh)) - hanh trinh va nhung cong dan phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu xanh) OR (chieu xanh))) or (hieu manh)) - hanh trinh va nhung cong dan phan tu*.