Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh pham » trinh phan, trinh phap, trinh cham
thanh rong » thanh cong, thanh long, thanh hong
rong doanh » trong doanh, dong doanh, dung doanh
doanh khoa » toan khoa
khoa cam » khoan cam, khoa kham, khoa ma

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) or (((chieu xanh) OR (chieu sang)))) - canh trinh pham thanh rong doanh khoa cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (((chieu xanh) OR (chieu sang)))) - canh trinh pham thanh rong doanh khoa cam.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (((chieu xanh) OR (chieu sang)))) - canh trinh pham thanh rong doanh khoa cam".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (((chieu xanh) OR (chieu sang)))) - canh trinh pham thanh rong doanh khoa cam*.