Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hanh trinh » canh tranh, hanh chinh
luat thong » suat thong, xuat thong, luat trong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong tinh » cong trinh, cong vinh, long tinh
toan cau » toan cao, toan ban, toan tap

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