Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hanh trang » thanh trung, canh tranh, hanh trinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trang va » tran van, hang va
cong san » cong tac
toan ban » van ban
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 trang va thuong cong san ((((toan ban) or (toan cao))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh trang va thuong cong san ((((toan ban) OR (toan cao))) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh trang va thuong cong san ((((toan ban) or (toan cao))) or (toan tap))*.