Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
thong cong » trong cong, tong cong, thong thong
toc chieu » toc thieu, doc hieu, doi chieu
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
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 chieu) OR (hoc thieu)) xanh - ((hanh tranh) or (canh tranh)) cua thong cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc chieu) OR (hoc thieu)) xanh - ((hanh tranh) OR (canh tranh)) cua thong cong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc chieu) OR (hoc thieu)) xanh - ((hanh tranh) or (canh tranh)) cua thong cong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((toc chieu) OR (hoc thieu)) xanh - ((hanh tranh) or (canh tranh)) cua thong cong tinh toan cau*.