Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
sinh trong » sinh truong, sinh trung, dinh trong
dieu cong » lieu cong, dien cong, dieu con
cong cong » cong dong, trong cong, dung cong
tan khoan » toan khoan, tai khoan, tao khoang
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong tac, cong san, cong thanh

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 tinh - sinh trong dieu cong cong tan khoan cam~.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - sinh trong dieu cong cong tan khoan cam*.