Perhaps you should try some spelling variations:
trong tinh » truong tinh, trong kinh, trong sinh
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
bang vat » dang vat, hang va, dang van
cang vat » dang vat, hang va, dang van
toan ban » van ban
bang va » hang va, ban va, trang va

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

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