Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong va » truong dai, truong cao, truong dao
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » trang va, trung ha, trung tam
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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