Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » hieu quang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong den » thong dien, thong dan, tuong den
chu xanh » chu manh, chieu xanh, chua xang
den toan » dien toan, dan toan, den tran
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: theo ((chu xanh) or (((chieu sang) OR (hieu lang)))) - hanh tranh cua thong thong den toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (((chieu sang) OR (hieu lang)))) - hanh tranh cua thong thong den toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (((chieu sang) OR (hieu lang)))) - hanh tranh cua thong thong den toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (((chieu sang) OR (hieu lang)))) - hanh tranh cua thong thong den toan cao*.