Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
nho thuong » nho truong, cho thuong, pho thuong
thuong dan » huong dan, thuong han, thuong dam
trinh vi » trinh va, trinh ve, trinh viet
trinh he » trinh han, trinh hoa, trinh thi
dan toan » van toan, dan than, manh toan
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: hoc ((chieu xanh) or (chieu sang)) - hanh ((trinh vi) or (trinh he)) nho thuong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trinh vi) OR (trinh he)) nho thuong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - hanh ((trinh vi) or (trinh he)) nho thuong dan toan cao*.