Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
thong cong » tong cong, thong thong, phong chong
hoc thieu » toc thieu, hoc hien
phan cau » phan dau, phan cac, phan lap

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