Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bugs code snippets", "locating bug code slippers"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"du hoc dai snippets" » "du hoc dan snippets", "tu hoc dai snippets", "duoc hoc dai snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("du hoc dai snippets") OR ("python using data snippets"))) OR ("locating bugs code slippers"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"du hoc dai snippets\") OR (\"python using data snippets\"))) OR (\"locating bugs code slippers\"))".
• Removing quotes may allow a broader search: (((( du hoc dai snippets ) OR ( python using data snippets ))) OR ( locating bugs code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("du hoc dai snippets") OR ("python using data snippets"))) OR ("locating bugs code slippers"))*.