Perhaps you should try some spelling variations:
hanh tang » hanh trang, anh tang, hanh mang
cua trong » cua truong, cua trung, qua trong
khoan cam » khoa cam, khoan va, phan cam
tang cua » mang cua, hang cua, tang luan
cong san » cong tac
khan cap » khan ap, than cap, phan cac
doi chi » doi khi
chi dan » choi dan, chi van, thi dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi dan - hanh tang cua trong cong san ((khan cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi dan - hanh tang cua trong cong san ((khan cap) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: doi chi dan - hanh tang cua trong cong san ((khan cap) or (khoan cam))*.