Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"do trung low snippets" » "do trung code snippets", "do trung long snippets", "do truong lon snippets", "do truong lop snippets", "bo truong low snippets", "le trung low snippets"
"using java java snippets" » "using data java 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: "((((\"do trung low snippets\") OR (\"using java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( do trung low snippets ) OR ( using java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("do trung low snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))*.