Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh vat » trinh van, trinh luat, sinh vat
trong ban » trong san, trong tan, trong quan
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ve » trinh he, trinh va, trinh vi
ban than » ban thanh, van thanh, ban hang
than tap » toan tap, han tap, phan tap

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 - hanh ((trinh vat) or (trinh ve)) dung trong ban than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh vat) OR (trinh ve)) dung trong ban than tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh vat) or (trinh ve)) dung trong ban than tap*.