Perhaps you should try some spelling variations:
quan trong » gian trong
tran thanh » ban thanh, van thanh, quan thanh
toan thanh » hoan thanh, toan thang, tan thanh
doi chieu » doc hieu, doi chi, mot chieu
hanh tang » hanh trang, anh tang, hanh mang
tang quan » tang luan, nang quan, tong quan
ho chieu » theo chieu, hoc thieu, mot chieu

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) or (doi chieu)) xanh - hanh tang quan trong cong ((tran thanh) or (toan thanh)) ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - hanh tang quan trong cong ((tran thanh) OR (toan thanh)) ca.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - hanh tang quan trong cong ((tran thanh) or (toan thanh)) ca*.