Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tung » thanh cong
hieu cach » hieu cac, chieu sach, hieu ca
cua trong » cua truong, cua trung, qua trong
ban khoan » toan khoan, cac khoan, san khoa
tung cua » trung cua, tuong cua, dung cua
cong ban » cong bang, cong san, cong tan
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 xanh) or (hieu cach))) or (chieu sang)) - thanh tung cua trong cong ban khoan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu xanh) OR (hieu cach))) OR (chieu sang)) - thanh tung cua trong cong ban khoan va.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu xanh) or (hieu cach))) or (chieu sang)) - thanh tung cua trong cong ban khoan va*.