Perhaps you should try some spelling variations:
thong trinh » thong tinh, chuong trinh, phuong trinh
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » hanh trinh, hanh trang, lanh tranh
trinh toan » tinh toan, thanh toan, trinh han
cua thong » cua thuong, cua khong, cua tong
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: ho ((chieu sang) or (diep tinh)) - ((hanh tranh) OR (canh tranh)) cua thong thong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (diep tinh)) - ((hanh tranh) OR (canh tranh)) cua thong thong trinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (diep tinh)) - ((hanh tranh) OR (canh tranh)) cua thong thong trinh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (diep tinh)) - ((hanh tranh) OR (canh tranh)) cua thong thong trinh toan cao*.