Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
cong vang » cong lang, cong quang, cong ngang
vang phan » van phan, nang phan, quang phan
ho chieu » theo chieu, hoc thieu, doi chieu

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 sach - canh ((trinh vat) or (trinh van)) nhung cong vang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh ((trinh vat) OR (trinh van)) nhung cong vang phan tu.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh ((trinh vat) or (trinh van)) nhung cong vang phan tu*.