Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, nhieu tang
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » hieu quang, nhieu tang, hieu van
ba truong » xa truong, bo truong, ba trung
trung ba » truong ba, trung ha, trung va
toan ban » van ban

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