Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » thong cong, hang cong, nhung don
truong va » truong dai, truong cao, truong dao
dung cong » dung trong
tan thanh » tran thanh, tang thanh, toan thanh
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » trang va, trung ha, trung tam

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