Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap

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