Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"_ tieu thi slippers" » "_ trieu thi slippers", "_ tiep thi slippers", "_ tieu thu slippers", "_ tien thi slippers", "_ tieu thi slippery"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java grippers\") OR (\"_ tieu thi slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using java grippers ) OR ( _ tieu thi slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java grippers") OR ("_ tieu thi slippers"))) OR ("locating bug code snippets"))*.