Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chua xang » chua nang, chuc nang, chu bang
dung cong » dung trong
chu manh » ho manh, chu han, chu van
trinh va » trinh van, trinh vat, trinh ve
toan ban » van ban
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) or (chu manh)) - hanh trinh va dung cong trinh ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chu manh)) - hanh trinh va dung cong trinh ((toan tap) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (chu manh)) - hanh trinh va dung cong trinh ((toan tap) OR (toan ban))*".