Perhaps you should try some spelling variations:
"van phan hang slices" » "van phan ham slices", "van phan dang slices", "van pham hang slices", "van phan hong slices", "van phong hang slices", "van thanh hang slices", "luan phan hang slices"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "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 snippets\") OR (\"van phan hang slices\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( van phan hang slices ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("van phan hang slices"))) OR ("locating bug code snippets"))*.