Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, chieu xanh
tuong cong » truong cong, trong cong, tong cong
trinh toan » tinh toan, thanh toan, trinh han
trung va » truong va, trang va, trung ha
va tuong » va thuong, va thong, xa truong
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) OR (chieu sach)) - thanh trung va tuong cong trinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chiet tach) OR (chieu sach)) - thanh trung va tuong cong trinh toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) OR (chieu sach)) - thanh trung va tuong cong trinh toan tap*.