Please help: Secondary Keywords

I can seem to get the 2nd and 3rd kw on page 1. I feel like I've thrown everything at it PBNs, social signals, Web2.0 some blasts in the lowers tiers etc.

1st kw 1000/m
Rank: #2

2nd kw 1500/m
Rank: page 2-7 (constant dance)

3rd kw 1200/m
Rank: page 2-9 (constant dance)

Any advice is much appreciated

any ??