Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
ho lieu » so lieu, co lieu, ho kieu
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang

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 trinh ((va hang) OR (va lang)) cong tan ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - hanh trinh ((va hang) OR (va lang)) cong tan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh trinh ((va hang) OR (va lang)) cong tan ((toan cao) OR (toan ban))*.