Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung hieu » thuong hieu, trung kien, trong hiep
hieu tuong » hieu truong, bieu tuong, dieu tuong
tuong cong » truong cong, trong cong, tong cong
san khoan » san khoa, toan khoan, cac khoan
cong san » cong tac
khoan va » doan va, khoa ma, nhan va

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) or (chieu tinh)) - sinh trung hieu tuong cong san khoan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu tinh)) - sinh trung hieu tuong cong san khoan va.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu tinh)) - sinh trung hieu tuong cong san khoan va*.