如有所失

to seem as if something is amiss (idiom)

as / as if / such as

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

somewhat / to some extent

actually / place / classifier for houses, small buildings, institutions etc / that which / particle introducing a relative clause or passive / CL:個|个[ge4]

to lose / to miss / to fail