Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho trien he snippets" » "ho tien he snippets", "nho thien he snippets", "tho tren he snippets", "kho thien hue snippets", "kho trien ben snippets", "kho trien nha snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("kho trien he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho trien he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho trien he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho trien he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.