Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
van thanh » ban thanh, van tuan
van thang » van khang, van hang, van than
ho chieu » theo chieu, hoc thieu, doi chieu
thang va » hang va, trang va, thong va
tang va » trang va, tang van, tang vat

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 - hanh ((tang va) OR (thang va)) nhung cong ((van thanh) or (van thang)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tang va) OR (thang va)) nhung cong ((van thanh) OR (van thang)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((tang va) OR (thang va)) nhung cong ((van thanh) or (van thang)) cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tang va) OR (thang va)) nhung cong ((van thanh) or (van thang)) cao*.