Perhaps you should try some spelling variations:
quan trong » gian trong
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh tang » hanh trang, anh tang, hanh mang
tang quan » tang luan, nang quan, tong quan
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - hanh tang quan trong cong dan ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh tang quan trong cong dan ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh tang quan trong cong dan ((toan cau) or (van ban))*.