Perhaps you should try some spelling variations:
transform primer » transform order, transform power, transform fourier
primer across » prices across, time across, power across
gas transport » mass transport, bus transport, car transport
transport a » transport _, transport data
female gas » female goats, female a, female heads
a female » _ female
a a » a la
agua » gua, agus, aga
legendre » legende, legendary, legend

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( agua _ legendre transform primer across ) OR ( a female gas transport a a ))~.
• Adding a wildcard symbol may retrieve word variants: (( agua _ legendre transform primer across ) or ( a female gas transport a a ))*.