Perhaps you should try some spelling variations:
khoan cam » khoa cam, phan cam, thuan cam
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
khoan va » doan va, khoa ma, nhan va
cong san » cong tac
san tran » tan tran, ban tran, dang tran
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - anh ((khoan cam) OR (khoan va)) trong cong san tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - anh ((khoan cam) OR (khoan va)) trong cong san tran cau".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - anh ((khoan cam) OR (khoan va)) trong cong san tran cau*.