Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tieu danh » dieu danh, tiep danh, thien danh
trong tap » trong thap, tong tap, trong tan
sinh cua » manh cua, dinh cuu
tap toan » tap doan, tap quan, bai toan
toan ban » van ban
sinh va » sinh vat, tinh va, dinh van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu danh) or (chieu xanh)) - hanh ((sinh cua) OR (sinh va)) dung trong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu danh) OR (chieu xanh)) - hanh ((sinh cua) OR (sinh va)) dung trong tap toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu danh) or (chieu xanh)) - hanh ((sinh cua) OR (sinh va)) dung trong tap toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu danh) or (chieu xanh)) - hanh ((sinh cua) OR (sinh va)) dung trong tap toan ban*.