Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
cong thong » cong thuong, cong trong, dong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
thong duy » thong day, thong dung, thong thuy
sinh cua » manh cua, dinh cuu, sinh va
duy phan » duc phan, dung phan, duy khanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu xanh) or (hieu manh)) - hanh sinh cua cong thong duy phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (hieu manh)) - hanh sinh cua cong thong duy phan tu*.