Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trinh van » trinh han, trinh quan, trinh toan
nang cong » nang song, dang cong, bang cong
trinh va » trinh vat, trinh ve, trinh vi
cong van » cong vang, cong san, song van
tuan cao » toan cao, juan cao, quang cao
huy » thuy

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh ((trinh va) OR (trinh van)) nang cong van ((tuan cao) or (quang huy))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trinh va) OR (trinh van)) nang cong van ((tuan cao) OR (quang huy)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh ((trinh va) OR (trinh van)) nang cong van ((tuan cao) or (quang huy))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh va) OR (trinh van)) nang cong van ((tuan cao) or (quang huy))*.