Perhaps you should try some spelling variations:
phung cong » nhung cong, phong cong, nhung chong
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
trung hoc » trung quoc
trung ha » trung tam, trung cap
cong dan » cong san, cong tan, huong dan
dan chay » dan chan, san chay, toan chay
chay cao » cay cao, chat cao, nha cao

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