Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trong tap » trong thap, tong tap, trong tan
bang vat » bang va, dang vat, hang va
cang vat » dang vat, hang va, dang van
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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 xanh) or (lieu tinh)) - canh ((bang vat) OR (cang vat)) dung trong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (lieu tinh)) - canh ((bang vat) OR (cang vat)) dung trong tap toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (lieu tinh)) - canh ((bang vat) OR (cang vat)) dung trong tap toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (lieu tinh)) - canh ((bang vat) OR (cang vat)) dung trong tap toan ban*.